Retsch PM400 - Emissions; Noise Levels; Measurement Conditions; Degree of Protection

Technical data
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4.7 Emissions
CAUTION
Damage to hearing
The level of noise can be high depending on the type of material,
the knife used, the speed set and the duration of the grinding
process.
- Noise that is excessive in terms of level and duration can cause
impaired or permanently damaged hearing.
• Ensure suitable sound-proofing measures or wear
hearing protection.
4.7.1 Noise levels
Noise measurement in accordance with DIN 45635-31-01-KL3
The noise levels are largely influenced by the machine speed, the grinding jar size
and the diameter of the grinding balls used.
Workplace-related emissions LpAeq = up to 85dB(A)
4.7.2 Measurement conditions
Grinding set: 4x 500ml special steel with 5 balls each Ø30mm TC (tungsten
carbide)
Sample material: quartz, 135g each
Speed: 380 min-1
4.8 Degree of protection
IP40
4.9 Protective equipment
This device is equipped with automatic lid closing which prevents it being started in
an unsafe state.
– The device can only be started with closed lid.
– The lid can only be opened when the device has come to a halt.
4.10 Dimensions and weight
Height: up to approx. 1220 mm / Width: 836 mm / Depth:up to approx. 780 mm
Weight : PM400 net approx. 290 kg
4.11 Required floor space
Height (open cover): 1900mm / Width: 1400mm / Depth: 900mm;
NOTICE
A clearance distance of 100mm is necessary at the back to allow the fans to
operate.